Aspirin is a vasodilator and might help counteract the vasoconstriction without affecting the trip at all. Otherwise, drinking a hot drink (not caffeine) or doing excercise of some sort may help to bring your core temperature up and promote natural vasodilation. Avoiding things like caffeine and nicotine on the day of your trip may be useful, as these are vasocontrictors themselves.

I'm not a doctor, but my bet is that shrooms are a vasoconstrictor. They channel blood away from your skin making you feel cold.

I come up in a hot shower and then put on my thermal underwear! It feels silly but I'm sooooo cozy!

Not long after I was on a solo mushroom trip, just laying down alone in the dark and was just being berated by something or someone about what a fool I was. Telling me that I'm a weak loser for not being able to control myself and that my sexual energy was too important to let internet lizards convince me to dump it into a tissue and throw in the garbage, lol crazy stuff like that. Anyways since then I've been really good, not perfect but whenever I slip up I feel shameful about it and resolve to get back on track. It's been an incredible benefit for my marriage. I have more energy, ambition and confidence too. Stay off the porn if you can. And if you slip up just quit again. The desires will diminish over time. Totally worth it in the long run

Think it's called "tripping balls"

Cold, yawn, and watery eyes are always for me.